You need the full path. Like, the part that is before users as well.
Easiest way is just to go to the folder where your mod is, and copy the path from there.
EDIT: A workaround is just using github from the get go. Not something i would recommended, but possible. Main benefit is that you are not deepending on using your computer ofc. In other words you just start at the multiplayer testing stage.
Edited 2017-11-21 06:25:13
MOD dev - Cannot specify local DEV path: 2017-11-21 06:24:04
Fizzer - I've tried both with and without the / at the very end. I'm running Chrome 62.0.3202.94 on OS X High Sierra. I was able to push to github and use that but that's definitely less-than-ideal from an R&D perspective. I'm guessing it is some sort of setting in the browser that is preventing access?
MOD dev - Cannot specify local DEV path: 2017-11-21 16:46:40